Apart from the SPOF, speedify introduces additional latency because you have to bounce through their servers.
Most of the time you can simply route traffic through multiple uplinks without bonding.
Most of the time you can simply route traffic through multiple uplinks without bonding.
If you are on a Zoom call, tunneling through Speedify in redundant mode will give you the minimum latency of n connections, reduce jitter (latency deviation), and eliminate packet loss.